Everything I've Tried in 5 Years of Long Covid Part 2 Endogenous Deficiency of Glutathione as the Most Likely Cause of Serious Manifestations and Death in COVID 19 Patients ACS Infectious Diseases COVID 19 patients have severely increased levels of oxidative stress and oxidant damage, and glutathione deficiency If fatigue, brain fog, or crashes make everything feel harder, strengthening the basics can make a real difference. Supporting mitochondrial function is a core piece of many Long COVID and ME CFS treatment